This question already has an answer here:I'm looking for an explanation for Java's behavior when handling the following scenarios. I understand that the ASCII table is arranged so that the value of the character 5 is five positions greater than 0. This allows for calculations to be done on the...
I was trying to do something similar to this:Which with VC++ doesn't compile with the error message:
It appears to be widely-held that type punning via reinterpret_cast is somehow prohibited (properly: "undefined behavior", that is, "behavior for which this International Standard imposes no requirements", with an explicit note that implementations may define behavior) in C++. Am I incorrect in using the following reasoning to disagree, and if...
Arrays don't have a "toList" function, so we need "Arrays.asList" helper functions to do the conversion.
C++ provides implicit conversion from T * to const T *.If I use T * within a container class now, like in vector<T *>, then there is of course no implicit conversion to vector<const T *> anymore.
My understanding is generic types are invariant, so if we have B as a subtype of A, then List<B> has no relationship with List<A>. So casting won't work on List<A> and List<B>.
From my prerequisites, generic types are invariant, so I can say if we have B subtype of A, then List<B> has no relationship with List<A>. So casting won't work on List<A> and List<B>
Horse is a struct which implements the Animal trait. I have an Rc<Horse> and a function that needs to take in an Rc<Animal>, so I want to convert from Rc<Horse> to Rc<Animal>.
I am using java 8.I recently came across this:This does not throw a java.lang.ClassCastException. Why is that?
I have an abstract Event class which has an abstract method:This method should check if two instances of an Event subclass intersect based on the instance variables of the particular subclass. I want to force any subclass of Event to override the method on its instance variables. What is the...